This is the planet Altair 4. It was first mentioned by name in the incomplete work The Inner Circle of Outer Rims, circa the late 1980s, which describes an actual journey to the planet. Thought at the time to be a work of satire or fiction, The Inner Circle of Outer Rims was widely disregarded by the small audience that read it. The author remains unknown to this day and the incomplete work itself has apparently been lost or suppressed.
Today, Altair 4 is known chiefly by the governments and corporate rulers of Earth as the origin of all UFO activity. This knowledge, of course, has been kept secret from the mass of humanity due to very real and very clear threats of planet-wide extermination.
The photograph you are looking at is extremely rare and the story behind its taking unknown. How it came to be in the hands of the author of this Tumblr post will not be said. It is placed here as a public service, for we are all in very great peril.
Just kidding. It’s the bottom of a frying pan.